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Achieve a 0-downtime CERN Database infrastructure

Varsha Rao

At CERN we have many systems which provide critical services and scheduling downtime for them is quite difficult. Live kernel patching is a technique which aims to update the system without any reboot or restart of the system. Using this approach, critical security updates can be applied to the systems at once without any disruption to the services. Oracle Ksplice and Red Hat Kpatch are two products which offer this solution. The aim of this project is to compare, evaluate and test these two products.

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